Granted Patent
Utility
US 5,000,625 · App. 07/217,884
Inserted cutting tool
Inventors:
Tatsuo Arai, Takayoshi Saito
Patented Case
View Patent ↗
Granted: Mar 19, 1991
Filed: Jul 11, 1988
Inventors
Tatsuo Arai
Takayoshi Saito
Assignee (at issue)
Mitsubishi Kinzoku Kabushiki Kaisha
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.